CN104594393A - Measuring instrument for foundation pile low strain detection and on-site monitoring system - Google Patents
Measuring instrument for foundation pile low strain detection and on-site monitoring system Download PDFInfo
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- CN104594393A CN104594393A CN201410720733.2A CN201410720733A CN104594393A CN 104594393 A CN104594393 A CN 104594393A CN 201410720733 A CN201410720733 A CN 201410720733A CN 104594393 A CN104594393 A CN 104594393A
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- foundation pile
- low strain
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- detection
- measurement instrument
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to a measuring and recording instrument and a monitoring system, wherein the measuring and recording instrument is used for measuring hammering force and pile body vibration in foundation pile low strain detection, and the monitoring system is used for monitoring on-site detection personnel. The instrument can be flexibly connected with a force sensor, a speed sensor, an acceleration senor and the like in an adaptive mode. The instrument can conduct tests in multiple aspects on an on-site tested foundation pile. Meanwhile, the local area wireless function can be started, and a wireless terminal which is connected with the instrument in an adaptive mode is started. The wireless terminal can be connected with a force sensor, a speed sensor, an acceleration senor and the like in an adaptive mode. The wireless terminal is carried with the on-site detection personnel to be flexibly used on a detection site, and therefore on-site testing is convenient. The on-site detection instrument has the 3G data transmission function and the GPS positioning function and can conduct communication with a data center server. The on-site detection instrument is used for monitoring detection behaviors of the on-site detection personnel.
Description
Technical field
The present invention relates in Low Strain Dynamic Testing of Piles a kind of for measuring hammer force, the test record instrument of pile body vibration and the monitor system for site testing staff, belonging to the pile foundation engineering quality examination field of civil engineering.
Background technology
When pile foundation engineering quality examination, Low Strain Dynamic Testing of Piles mode is often adopted to detect the foundation pile pile construction integrity in pile foundation.In traditional Low Strain Dynamic Testing of Piles, measure the propagation characteristic of one dimension compressional wave in pile body by an acceleration transducer for general and judge pile body integrity.Cannot accurately judge pile body upper and lower part defect under some particular measurement condition.
Meanwhile, along with the expansion of urban construction scale, the speed goes of building operations is fast, and the scale of detection is constantly expanding, so improving pile detection speed is ensure that Detection job is a key issue simultaneously.
The security incident caused due to construction quality in recent years takes place frequently, and testing is to ensureing construction quality particularly important, and the effective supervision of reply Site Detection personnel, prevents it from not going to scene and make up data and become a problem.
Summary of the invention
Based on Problems existing in above-mentioned current Low Strain Dynamic Testing of Piles, the object of the invention is to propose a kind of foundation pile low strain dynamic measuring apparatus and field surveillance system can measuring many kinds of parameters, by the configuration of inner conditioning module can realize measure many kinds of parameters, utilize between parameter mutually comparing formed objective to measurand, be familiar with accurately.This in-site measurement instrument can connect wireless senser, significantly can reduce the labour intensity of Site Detection.Meanwhile, having that real time data uploads can the positional information of real-time oversight Field Force with functions such as instrument location, plays the effect of strengthening management.
The present invention forms low strain dynamic foundation pile movable measurement instrument, wireless side and data center server by three parts and forms.
Low strain dynamic foundation pile movable measurement instrument is primarily of MCU, touch display screen, two-way A/D, conditioning module, 3G communication module, GPS locating module, local area communication module and corresponding power supply circuits composition.Two-way A/D can synchronous acquisition two-way input signal, makes two paths of signals have temporal uniformity, thus judges the situation of on-the-spot test from the angle of Liang Ge road signal.Conditioning module design can connect three kinds of different sensors: force snesor, velocity sensor and acceleration transducer.By arranging different sensor types to the conditioning module of instrument, three kinds of sensors can connect flexibly on two-way A/D acquisition channel.For when judging pile body upper and lower part defect, there is higher requirement to the dynamics of hammering and time.By force snesor, testing staff clearly can measure size and the duration of percussion power, as the signal of auxiliary judgment foundation pile pile defect.MCU provides instruction for each ingredient that operates to controlling detecting instrument, the data of process modules feedback.Touch display screen is the interaction platform of instrument and Site Detection personnel.GPS locating module is mainly used in the position of positioning acquisition instrument, and the latitude and longitude information and the unification that obtain instrument are the national time service central standard time.3G communication module makes current low strain dynamic foundation pile movable measurement instrument and remote data server set up data communication function, and on-the-spot foundation pile movable measurement instrument can the data file of uploading detection and synchronous location instrument position in real time in real time.When using remote supervisory function, real-time for detection file upload function is set to give tacit consent to Starting mode.Local area communication module mainly communicates with wireless senser, and the duty controlling wireless senser accepts the various data of wireless senser collection simultaneously.
Wireless side small in volume can be worn with oneself by Site Detection personnel, and having two-way A/D input interface can gather two-way on-site signal simultaneously.Because inside also disposed conditioning module, so also can connect the sensor of three types with the equally each interface of low strain dynamic foundation pile movable measurement instrument.When using local area radio function, foundation pile movable measurement instrument can be placed on Test Field periphery, and testing staff's instrument carries wireless side and sensor can carry out work in whole place, without the need to considering the impact of severe field condition on sensor wiring.
The detection data file of the on-the-spot foundation pile movable measurement instrument transmission of data server primary recipient, accomplishes the function that detection file is put on record in real time.Simultaneously determine whether, at appointment surveyed area, to play the detection behavior of site testing staff according to the locating information of field instrumentation and location determination algorithm.
Below in conjunction with the specific embodiment of measuring method, the present invention is further elaborated.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is low strain dynamic foundation pile movable measurement instrument of the present invention and wireless side inside composition schematic diagram;
Fig. 3 for when utilizing the foundation pile movable measurement instrument of low strain dynamic shown in Fig. 2 or wireless side to test at the scene and sensor connect relation;
Detailed description of the invention
During Site Detection, specific implementation method, step are:
(1) select wired mode collection or local area radio mode to gather according to field condition, during Preliminary detection, only can connect an acceleration or speed channels;
(2) as selected wireless mode sensor need be connected to the arbitrary acquisition channel interface of wireless side, as selected wired mode, sensor is connected to the arbitrary acquisition channel interface of foundation pile movable measurement instrument;
(3) passage of unlatching or wireless side and corresponding sensitivity are set according to the passage that connects in foundation pile movable measurement instrument inside;
(4) sensor is arranged on by the assigned position, stake top of peg;
(5) as shown in Figure 3, stake top is vertically knocked with hammer body;
(6) measured signal directly enters foundation pile movable measurement instrument A/D passage or transfers to foundation pile movable measurement instrument MCU by wireless side;
(7) signal after collection carries out processing rear display on the touchscreen by foundation pile movable measurement instrument;
(8) test the size of percussion power and lasting duration as needed, this needs installation drawing 3 mode knocking the inner installing force sensor of hammer;
(9) force snesor is coupled on an other A/D acquisition channel interface, force snesor parameter is set in foundation pile movable measurement instrument inside simultaneously, starts corresponding acquisition channel;
(10) curve that step (5) can record two parameters is repeated.
The sensor measuring impact acceleration in the present invention does not limit, and it can adopt the types such as piezoelectric type, pressure resistance type, condenser type; The signal of test record instrument is fitted and is adjusted amplification, the display of A/D conversion accuracy, sampling rate, waveform and test data how also not to limit for pile bearing capacity and pile construction integrity analysis etc.
During remote supervisory, specific implementation method, step are:
(1) according to Detection task arrangement, in the geographical information system of data server, mark will carry out the scene detected, the longitude and latitude set of setting Test Field is φ, considers that the error of GPS suitably can expand the scope of φ according to the current gps system selected;
(2) require that Site Detection engineer opens 3G communication module after reaching the spot, realize the real-time upload function of data, or setting data is uploaded as default option in real time;
(3), when carrying out Site Detection, data are detected once preservation together sends to data center server immediately with as the longitude and latitude (x, y) of prelocalization, current time service time t;
(4) if (x, y) ∈ is φ, judge that current uploading data is effective, otherwise start Forewarning Measures reminder-data care workers and contact Site Detection personnel and carry out position verification;
(5) as carried out the testing at multiple scene, time t can be utilized effectively to distinguish data and the positional information of each detection-phase.
Claims (4)
1., for measuring apparatus and the field surveillance system of Low Strain Dynamic Testing of Piles, comprise low strain dynamic foundation pile movable measurement instrument, wireless side and data center server composition.
2. measuring apparatus as claimed in claim 1 and field surveillance system, it is characterized in that low strain dynamic foundation pile movable measurement instrument is made up of MCU, touch display screen, two-way A/D, conditioning module, 3G communication module, GPS locating module, local area communication module and corresponding power supply circuits, the sensor that force snesor, velocity sensor and acceleration transducer etc. three kinds are different can be connected, accurately judge pile defect by the contrast of multiple sensors collection signal.
3. measuring apparatus as claimed in claim 2 and field surveillance system, it is characterized in that low strain dynamic foundation pile movable measurement instrument can be connected by built-in local area communication module and wireless side, also can connect the sensor of force snesor, velocity sensor and acceleration transducer three types with low strain dynamic foundation pile movable measurement instrument the same wireless side data acquisition port.When using local area radio function, foundation pile movable measurement instrument can be placed on Test Field periphery, and testing staff only carries wireless side and sensor can carry out work in whole place, without the need to considering the impact of severe field condition on sensor wiring.
4. measuring apparatus as claimed in claim 3 and field surveillance system, it is characterized in that low strain dynamic foundation pile movable measurement instrument can be communicated with the data server being arranged on a distant place by 3G communication module, for receiving the detection data file of the measuring apparatus transmission of on-the-spot Low Strain Dynamic Testing of Piles, accomplish the function that detection file is put on record in real time; Simultaneously determine whether in appointment surveyed area according to the locating information of on-the-spot low strain dynamic foundation pile movable measurement instrument and location determination algorithm, the detection behavior of site testing staff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720733.2A CN104594393A (en) | 2014-12-03 | 2014-12-03 | Measuring instrument for foundation pile low strain detection and on-site monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720733.2A CN104594393A (en) | 2014-12-03 | 2014-12-03 | Measuring instrument for foundation pile low strain detection and on-site monitoring system |
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| CN104594393A true CN104594393A (en) | 2015-05-06 |
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| CN201410720733.2A Pending CN104594393A (en) | 2014-12-03 | 2014-12-03 | Measuring instrument for foundation pile low strain detection and on-site monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246840A (en) * | 2017-07-14 | 2017-10-13 | 浙江大学 | A kind of dynamic strain measuring method based on piezo-electric effect |
| CN109743400A (en) * | 2019-01-17 | 2019-05-10 | 温州宏伟建设有限公司 | One kind being used for municipal works reflection wave method device |
| CN110528600A (en) * | 2019-08-06 | 2019-12-03 | 福建工大岩土工程研究所有限公司 | A kind of pile measurement system and method |
| CN114411830A (en) * | 2022-01-25 | 2022-04-29 | 杭州西南检测技术股份有限公司 | Method and system for detecting integrity of pile under bearing plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246840A (en) * | 2017-07-14 | 2017-10-13 | 浙江大学 | A kind of dynamic strain measuring method based on piezo-electric effect |
| CN109743400A (en) * | 2019-01-17 | 2019-05-10 | 温州宏伟建设有限公司 | One kind being used for municipal works reflection wave method device |
| CN109743400B (en) * | 2019-01-17 | 2019-11-08 | 温州宏伟建设有限公司 | One kind being used for municipal works reflection wave method device |
| CN110528600A (en) * | 2019-08-06 | 2019-12-03 | 福建工大岩土工程研究所有限公司 | A kind of pile measurement system and method |
| CN114411830A (en) * | 2022-01-25 | 2022-04-29 | 杭州西南检测技术股份有限公司 | Method and system for detecting integrity of pile under bearing plate |
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Inventor after: Chen Fan Inventor after: Li Jianmin Inventor after: Wang Haiyuan Inventor after: Jin Long Inventor after: Han Yuzhong Inventor after: Zhang Feng Inventor before: Chen Fan Inventor before: Li Jianmin Inventor before: Wang Haiyuan Inventor before: Jin Long Inventor before: Han Yuzhong Inventor before: Zhang Feng |
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Application publication date: 20150506 |